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Biomedical subjects

G A Gooding

Publications and source records attributed to G A Gooding.

At least 91 records · Page 5Linked to original sources
PubMed1983

Parathyroid scanning by computed tomography.

Conventional parathyroid computed-tomographic scanning detected 51% (29/57) of tumors averaging 1.5 X 1.0 X 0.8 cm in size at surgery. Forty-six per cent (7/43) of the scans were uninterpretable due to shoulder-streak artifacts. Using a specially designed patient positioning device and a new imaging protocol involving dynamic scanning and the intravenous administration of a bolus of contrast material, 14 patients were scanned; 78% (18/23) of tumors averaging 1.4 X 1.0 X 0.8 cm in size were detected. All 14 scans were interpretable, and image quality was markedly improved.

Contrast Media↗
PubMed1983

Parathyroid imaging: comparison of high-resolution CT and high-resolution sonography.

Parathyroid computed tomographic (CT) scanning using a specially designed patient positioning harness, bolus contrast administration, and dynamic scanning significantly improved localization of parathyroid tumors from 45% (19/42) to 76% (35/46) (p less than 0.01) over conventional CT scanning. High-resolution sonography with a 10 MHz transducer localized 65% (57/88) of these tumors. Average tumor size was 15 X 10 X 9 mm. Patients undergoing reoperation for hyperparathyroidism had similarly small tumors localized by CT in 63% (12/19) and high-resolution sonography in 47% (9/19) of cases. High-resolution sonographic equipment suitable for parathyroid imaging is not widely available. Since high-resolution CT is more generally available and more effective, it is recommended as the procedure of choice for localizing cervical parathyroid tumors.

Adenoma↗
PubMed1983

High-resolution ultrasonography and computed tomography of thyroid lesions in patients with hyperparathyroidism.

High-resolution ultrasonography and computed tomography examinations of the thyroid gland were compared with surgical inspection of the thyroid gland at the time of parathyroid surgery in 65 patients with hyperparathyroidism. Twenty-six patients (40%) had one or more nonpalpable thyroid lesions. Thirty benign thyroid lesions averaged 7 mm in size. A 5 mm follicular carcinoma and a 20 mm recurrent medullary carcinoma were also identified. Ultrasonography detected 88% (28/32), computed tomography detected 59% (19/32), and surgical inspection detected 84% (27/32) of the thyroid lesions. Preoperative ultrasonography with a 10 MHz small-parts real-time scanner is suited ideally to complement surgical inspection of the thyroid for delineation of small thyroid lesions in order to determine whether the lesions are solid or cystic and whether they are single or multiple. This information may be important to determine whether biopsy is necessary.

Adult↗
PubMed1982

Ultrasound visualization of the 5-F catheter.

A simple in vitro experiment showed that the 5-F angiographic catheter can be visualized on sonograms. Subsequent in vivo imaging showed that small catheters can be seen sonographically in many locations. Ultrasound is proposed as an effective presurgical procedure in order to determine whether a catheter fragment remains near an arterial puncture or has embolized distally.

Angiography↗
PubMed1982

Static and real-time B-mode sonography of arterial occlusions.

Static and real-time sonography can be used to confirm the clinical diagnosis of arterial occlusion. When occluded, both native arteries and grafts showed three sonographically detectable patterns. More often (18/23), the vessel or graft has a normal B-mode appearance but does not pulsate on real-time examination. Less often (4/23), there is no detectable vascular channel. In one instance, using a 10 MHz transducer, the occluding thrombus was demonstrated. Real-time imaging is an important tool in the examination of patients with vascular disease and can distinguish the normal-appearing but occluded artery seen on static examination from the patent, pulsatile one.

Aged↗
PubMed1981

Ultrasonography of the cecum.

Ultrasound can define masses in the cecum and the cecal bed. In the patient with a prior resection of adenocarcinoma of the cecum, the sonogram fulfills a primary role in the detection of large and ill-defined recurrences not amenable to detection by barium enema because of a right colectomy. Discrete lesions within the cecum whether secondary to inflammatory or neoplastic processes could not be differentiated.

Adenocarcinoma↗
PubMed1981

Ultrasonic evaluation of lymphocele formation after staging lymphadenectomy for prostatic carcinoma.

A total of eight lymphoceles developed in six of 22 (27%) prospectively studied patients undergoing pelvic lymphadenectomy for prostatic carcinoma. Ultrasonic characteristics in these eight and in 14 retrospectively studied lymphoceles were evaluated. A location lateral to the urinary bladder was characteristic. The anterior surface of the fluid collections was usually within 3 cm of the anterior abdominal wall. No new lymphoceles developed after the first postoperative month; only one developed after the first 10 postoperative days. Small (cross-sectional area less than 30 cm2), echofree lymphoceles were most likely to result in long-term spontaneous resolution. Large (cross-sectional area greater than 30 cm2) or complex lymphoceles often resulted in complications ultimately requiring surgical intervention.

Cysts↗
PubMed1981

The aortofemoral graft: detection and identification of healing complications by ultrasonography.

Although accepted as an accurate method for determining the size of abdominal aortic aneurysms, the value of gray-scale ultrasound in other aspects of peripheral vascular disease is less well defined. Therefore, we studied 87 patients with are aortofemoral grafts using B-scan and real-time scanners to determine the efficacy of these techniques in the detection of healing complications. Sonography delineated the proximal anastomosis in 84%, the iliac graft limbs in 88% to 91%, and the distal anastomosis in all but one instance. Sixty-six abnormalities, most clinically unsuspected, were identified. Of these, anastomotic femoral and aortic false aneurysms were most common. Ultrasound also identified perigraft fluid collections secondary to hematoma, seroma, and infection that were not detected by angiography. Ultrasound is relatively inexpensive, atraumatic, and without radiation hazard. It is recommended as the initial method for evaluating suspected healing complications of arterial grafting and as a means of long-term follow-up of patients with aortofemoral grafts.

Aged↗