RT Book, Section
A1 Dirkx, Tonja C.
A1 Woodell, Tyler B.
A2 Papadakis, Maxine A.
A2 McPhee, Stephen J.
A2 Rabow, Michael W.
A2 McQuaid, Kenneth R.
SR Print(0)
ID 1184182916
T1 Imaging Studies of the Kidney
T2 Current Medical Diagnosis & Treatment 2022
YR 2022
FD 2022
PB McGraw-Hill Education
PP New York, NY
SN 9781264269389
LK accessmedicine.mhmedical.com/content.aspx?aid=1184182916
RD 2024/04/19
AB Ultrasonography  is  used  to  assess  kidney  size  and  symmetry.  Kidney  size  is  usually  9–12  cm  in  length  in  adults  with  healthy  kidneys.  A  kidney  less  than  9  cm  in  length  in  an  adult  suggests  (but  does  not  confirm)  significant,  irreversible  kidney  disease.  A  difference  in  size  of  more  than  1.5  cm  between  the  two  kidneys  may  occur  in  unilateral  kidney  disease  (eg,  a  history  of  pyelonephritis  causing  damage  to  one  kidney).  Kidney  ultrasound  is  also  performed  to  assess  for  obstruction  and  hydronephrosis  (eFigure  22–2),  to  characterize  kidney  stones  and  mass  lesions,  to  screen  for  autosomal  dominant  polycystic  kidney  disease  (see  Figure  22–6),  to  localize  the  kidney  for  a  percutaneous  biopsy,  and  to  assess  postvoid  residual  urine  volume  in  the  bladder.  Image  quality  is  dependent  on  body  habitus  and  may  be  poor  in  obese  individuals.