By Smith S.
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The most important is the distal one that also occludes the entry of the accessory testicular vein. ̶̰ϴϧϭήΘ̰ϟ ήθϧ ̶ΗέΎθΘϧ ϪδγϮϣ ζϧΩέϮϧ Fig. 28 (F) with satisfactory clinical response. Noordanesh Medical Publication 909 CONTENTS Previous Page 91 0 Next Page A TEXTBOOK OF RADIOLOGY AND IMAGING Fig. 30 Transverse CT through the midpart of the kidneys. Prior to contrast the kidneys are of intermediate density (A), similar to liver, spleen and blood vessels. During the nephrogram phase the cortex is seen to enhance earlier than the medullary pyramids (B).
48 Acute oliguria after renal transplantation. Anterior perfusion phase images from 99 mTc-DTPA study show that blood flow to the transplanted kidney in the right iliac fossa is well maintained. Diagnosis: acute tubular necrosis. Fig. 49 Acute oliguria after renal transplantation. Anterior view dynamic images 2, 5 and 10 minutes after injection of 99 mTc-DTPA show a photon deficient area which represents the totally ischaemic graft in the left iliac fossa; diagnosis: renal vein thrombosis. Fig.
A further I litre of dilute oral contrast taken 4 h before the scan is useful to image the large bowel and rectum. Alternatively, the same strength contrast can be administered immediately before the scan as an enema. All patients being investigated for malignancies should have a chest radiograph and some departments will also perform routine CT of the chest. CT is commonly performed as a relative emergency for suspected acute urinary tract problems. When CT is performed for urinary tract calculi, both intravenous and oral contrast are avoided.