PubMed Health⌕ Search

Biomedical subjects

C S de Graaff

Publications and source records attributed to C S de Graaff.

24 records · Page 2Linked to original sources
PubMed1978

Gray-scale echography of the pancreas. Re-evaluation of normal size.

One hundred ultrasonograms of patients without pancreatic disease were reviewed. The head, neck, and body of the pancreas were measured in the longitudinal and transverse/oblique planes. The mean thickness of the pancreatic head was 2.01 +/- 0.39 cm (standard deviation) in the longitudinal plane and 2.08 +/- 0.40 cm in the transverse/oblique plane. The same respective measurements were 1.18 +/- 0.36 cm and 1.16 +/- 0.29 cm for the body and 1.00 +/- 0.30 cm and 0.95 +/- 0.26 cm for the neck. The anatomy and consistency of the normal and diseased pancreas are discussed.

Humans↗
PubMed1978

Clinical evaluation of pulse-Doppler device linked to gray scale B-scan equipment.

A pulse Doppler device linked to a commercially available B-mode ultrasound scanner permits the origin of the Doppler signals to be located accurately on the B-scan by a bright-up cursor. Case histories illustrate the clinical application of this device in differentiating between vascular and nonvascular structures, or patent and thrombosed vessels. This is especially valuable when there is pathological distortion of the anatomy.

Adult↗
PubMed1978

Surgical and pathologic correlation of cholecystosonography and cholecystography.

To define the accuracy of varying ultrasonic patterns in the diagnosis of gallstones, the records of 145 patients with ultrasound examination of the gallbladder prior to cholecystectomy were reviewed. Three abnormal scan categories were established: category 1--shadowing opacities that move with gravity within the gallbladder lumen; category 2--nonvisualization of the gallbladder lumen; and category 3--nonshadowing opacities within the gallbladder lumen. The accuracy of these criteria for gallstone diagnosis was found to be 100%, 96%, and 61%, respectively. Overall accuracy was 96% for gallbladder disease, with a 4% false negative rate. Oral cholecystography demonstrated an accuracy of 93% in this series. A preoperative ultrasound diagnosis of gallstones should probably be limited to category 1 and 2 appearances only.

Cholecystography↗