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J Nishikawa

Publications and source records attributed to J Nishikawa.

At least 127 records · Page 7Linked to original sources
PubMed1990

[Thin-section computed tomography of the bronchi; 2. Right upper lobe and left upper division].

Thin (2mm) section contiguous computed tomographic (CT) scans were obtained through the bronchi of the right upper lobe and the left upper division in 30 patients. All segmental bronchi were identified. The right subsegmental bronchi were identified in 100%, and the left subsegmental bronchi in 97%. The type of the orifice of the right bronchus was trifurcated (53%), the extension of B1 was apicoanterior (50%), and the size of B2b was equal to B3a (63%). The extension of the left B3 was subapicoanterior (38%), and the size of B1+2c was equal to B3a (62%).

Adult↗
PubMed1990

[Renal lymphoma; six cases].

Six patients had nine kidneys with lymphoma. Five patients (83%) had non-Hodgkin lymphoma, and three (50%) bilaterally. There were multiple nodules in four kidneys (44%). The lesions were changeful in the course. Gallium scintigraphy showed abnormal uptakes. Magnetic resonance imaging was examined in one case. The lesions were hypovascular in the angiographies. Inflammation is one of the different diagnosis.

Adult↗
PubMed1989

[Computed tomography of postoperative pelvic lymphocele].

Computed tomography (CT) was obtained in seven patients with postoperative pelvic lymphocele. The CT appearance of the lymphocele was nodule or oval cystic mass of low attenuation. Most of lymphoceles located laterally in the external iliac region. They were identified on the first CT, mean 2.5 months after surgery. They became small (2 cases) or disappeared (4 cases, mean 7 months after surgery). Infection was noted in one case, and another patient had lower abdominal pain. One of different diagnoses is recurrence.

Female↗
PubMed1989

[Cardiac response during various activities in patients with ischemic heart disease evaluated by an ambulatory ventricular monitor (VEST)].

To assess the cardiac response to various exercise in ischemic heart disease (IHD), left ventricular function was continuously measured with an ambulatory ventricular monitor (VEST) in 3 normal subjects and 15 IHD patients. Treadmill exercise (early stage (E1), end stage (E2) and recovery standing state (RE], walking (WK) and climbing stairs (CS), was used for exercise. 15 IHD patients were divided into 4 groups by the LVEF response to treadmill exercise. In group 1 (G1), LVEF increased gradually at stage 1 and became plateau from stage 2 to end stage like normal group. In group 2 (G2), LVEF increased at stage 1 and became plateau from stage 2 but decreased from maximal EF more than 5% at end stage. In group 3 (G3), LVEF increased only at stage 1 and decreased immediately after stage 1 to end stage. The decrease of LVEF at end stage from standing was more than 5%. In group 4 (G4), LVEF decreased at stage 1 and became minimum at end stage. This grouping was well related to thallium redistribution (Tl RD) score and coronary arteriography (CAG) score. We could predict the severity of coronary artery disease from this grouping because all group 3 or 4 patients had severe coronary artery disease. VEST was useful for the evaluation for the tolerance to daily activities. Group 1, 2 and 3 tolerated daily activities while group 4 could not always. The degree of the increase in cardiac output during ischemia evaluated by VEST may be one of the useful index of the tolerance to exercise. In conclusion VEST was very useful for evaluating cardiac capacity of ischemic heart disease patients during various exercise.

Coronary Disease↗
PubMed1989

[Thin-section computed tomography of the bronchi: right middle lobe, left lingular division, and lower lobes].

Thin (2 mm) section contiguous computed tomographic (CT) scans were obtained through the bronchi of the right middle lobe, the left lingular division, and the lower lobes in 24 patients. All segmental bronchi were identified except subsuperior and medial basilar segmental bronchi. Subsegmental bronchi of the left inferior lingula were seen in only 17%, but other subsegmental bronchi in greater than 75%. Variations in branching patterns were discussed.

Adult↗
PubMed1989

[N-isopropyl I-123 p-iodoamphetamine (IMP) brain SPECT in Alzheimer's disease].

Eighteen patients with Alzheimer's disease (AD), 5 patients with Pick disease (PD), 6 patients with other types of degenerative dementia (O) and 12 age-matched normal control subjects (N) were studied using N-isopropyl p-[I-123]iodoamphetamine (I-123 IMP) with SPECT. Regional to cerebellar activity (R/CE) ratio and frontal to parietal (F/P) activity ratio were evaluated in each case. I-123 IMP-SPECT revealed focal abnormality in all cases in AD, PD, O group, while XCT and/or MRI were normal or showed cerebral atrophy without focal abnormal density or intensity. In AD group, R/CE ratio in all the regions except for bilateral Rolandic area and left primary visual cortex were significantly lower (p less than 0.05 or p less than 0.01) than that in N group, and F/P ratio were significantly higher (p less than 0.01) than that in P and O group. In conclusion, I-123 IMP-SPECT is useful to detect focal perfusion abnormality in dementia and may be of value in differentiating Alzheimer's disease from dementia of non-Alzheimer type.

Aged↗
PubMed1988

Technetium-99m dimercaptosuccinic acid uptake in long-term catheterized kidney. Comparison with renal function.

We studied 23 long-term catheterized kidneys in 14 patients. The uptake of 99mtechnetium dimercaptosuccinic acid (99mTc-DMSA) was measured at one- and two-hour intervals after injection, and the uptake was corrected for variations in renal depth. These values were compared with inulin, creatinine, and para-amino hippurate (PAH) clearances which were measured in each kidney by collecting urine through long-term catheterization. Correlation coefficient was obtained between PAH clearance corrected for the body surface area and the two-hour uptake of 99mTc-DMSA. The correlation coefficients between the two-hour uptake of 99mTc-DMSA and the clearance values are not significantly different from those between the one-hour uptake and the clearance values. Corrections of the uptake for variations in renal depth did not improve the correlation coefficients. The results show that 99mTc-DMSA is an excellent method to estimate the renal plasma flow and the one-hour uptake without correction for renal depth is clinically sufficient to evaluate the split renal function.

Aged↗
PubMed1988

Auscultation of S3.

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Heart Auscultation↗
PubMed1988

Circadian rhythm of liver parameters (cellular structures, mitotic activity, glycogen and lipids in liver and serum) during three consecutive cycles in phenobarbital-treated rats.

The circadian rhythm of gastric content, serum alkaline phosphatase (alk.P.), serum lipids, body weight (wt), relative (rel.) liver wt, cellular structures (by light- and electron-microscopy), mitotic activity of hepatocytes, glycogen content, protein and lipids in liver was studied in 180 male Sprague-Dawley rats orally treated at 0830-1030 with 50 mg/kg phenobarbital (PB) for 7 days. Thereafter, five PB-treated males and five controls each were studied at 4-hr intervals at 0600, 1000, 1400, 1800, 2200 and 0200 on 3 consecutive days. The lighting schedule in the colony was 12:12 = light/dark (light from 0600 to 1800). Following the rhythm of gastric emptying, the rel. liver wt showed a clear circadian rhythm with a peak at 0800. The rel. liver wt was raised in PB-treated rats at all times of the day. The circadian rhythm of cellular structures was closely related to the hepatic glycogen content which exhibited a clear rhythm with the peak also at 0800, but lowered values were found in PB-treated rats. The mitotic activity of hepatocytes was significantly increased in PB-treated rats but displayed the same circadian rhythm as controls with peaks at noon and troughs at midnight. The well-known hypertrophy of the smooth endoplasmic reticulum in PB-treated rats was not found at 0600, but was fully developed at 1400 and 2200. PB-treatment increased significantly the liver content of cholesterol, triglycerides and phospholipids. Liver cholesterol showed a clear circadian rhythm with peaks at 1800. No rhythm of liver protein, triglycerides and phospholipids was observed. In serum, levels of cholesterol were significantly elevated, those of triglycerides and alk.P. significantly lowered, while those of phospholipids were not affected by the treatment. The three serum lipids, alk.P. and beta-lipoprotein exhibited a clear circadian rhythm, while serum glucose and non-esterified fatty acids did not.

Animals↗
PubMed1988

[Prospective study to assess the clinical efficacy of bone scintigraphy--comparative study of the efficacy in breast carcinoma and prostate carcinoma].

Prospective study of bone scintigraphy was performed on 414 patients with breast carcinoma and 88 patients with prostate carcinoma. In 468 of them, confirmative diagnoses of bone, whether metastasis was existent or not, were made after the observations over a year. Finally, the incidences of bone metastasis were 11 percent for breast carcinoma and 54 percent for prostate carcinoma respectively. The efficacy of preoperative bone scintigraphy in breast carcinoma was comparable to that in prostate carcinoma with regard to improvement of predictive probability of bone metastasis: raising up the probability in the positive cases and bringing down in the negative cases.

Bone Neoplasms↗
PubMed1988

[Prospective study to assess the clinical efficacy of bone scintigraphy--some analyses of clinical data].

The value of preoperative bone scans in patients with primary breast and prostate cancer was evaluated prospectively. Of 414 patients with breast cancer, clinical stage I is 14, II is 219, IIIA is 59, IIIB is 39 and IV is 14. Of 88 patients with prostate cancer, clinical stage I is 14, II is 15, III is 18 and IV is 41. 11 percent of patients with breast cancer and 54 percent of patients with prostate cancer had bone metastases. Clavicle, ribs, thoracic spine, lumbar spine and pelvis metastasized most frequently. The incidences of bone metastases were 18.4% with Scirrhous carcinoma, 15.4% with Medullary tubular carcinoma and 3.8% with Papillotubular carcinoma. The methodology and results of ROC analysis were described in our other papers. Some results of data analysis were described in this paper.

Adult↗
PubMed1988

[Prospective study to assess the clinical efficacy of bone scintigraphy--ROC analysis].

The value of preoperative bone scans in patients with primaly breast and prostate cancer was evaluated prospectively. The methodology and some clinical results were described previously. The clinical efficacy of the bone scan was assessed by using ROC analysis and we obtained the following results. 1) Preoperative bone scan of carcinomas of the breast is effective for patients with clinical stage IIIA, IIIB and IV. It is not so effective for patients with clinical stage I and II, but there is no denying the importance of it, because it provides a base-line scan for comparison to subsequent scans obtained in the postoperative period. 2) Preoperative bone scan of prostate carcinomas is effective, especially for clavicle, the ribs and the cervical spine, when compared with bone X-ray. 3) Bone scan is effective means for patients who were diagnosed uncertainly to have bone metastasis.

Bone Neoplasms↗
PubMed1988

[Distribution patterns of hypertrophy at the apical level in patients with giant negative T waves: identification by magnetic resonance imaging].

To clarify the distribution patterns of hypertrophy at the apical level in patients with giant negative T waves (GNT), ECG-gated magnetic resonance imaging (MRI) was performed in 10 patients with GNT and in five normal controls. End-diastolic left ventricular short-axis images at the basal and apical levels were obtained in all subjects. Thicknesses of the septal, anterior, lateral and posterior walls at these two levels were measured and distribution of hypertrophied myocardium (more than or equal to 15 mm) at the apical level was examined. The ratio (R) of the maximal thickness at the apical level over that at the basal level was calculated. In normal subjects, the mean apical wall thickness was 8.7 +/- 1.9 mm. In the GNT group, the wall thickness was always greater than the mean value +3 SD of the normal control, and there were no differences among the four segmental walls. The hypertrophic portions at the apex were circumferential in three, septal-anterior-lateral in two, septal-anterior in two, septal in one, anterior in one and lateral in one. In patients with GNT, the average maximal thickness at the apical level was 19.3 +/- 3.2 mm; by location, four cases in the septum, four in the anterior wall and two in the lateral wall, and the average minimum thickness was 11.7 +/- 3.7 mm; all in the posterior wall. The R was more than 1.3 in nine patients with GNT and less than 1.0 in all normal subjects. In conclusion, there was a variety of patterns of apical hypertrophy, and the R greater than or equal to 1.3 was characteristic in patients with GNT.

Adult↗