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Assessment lumboperitoneal or ventriculoperitoneal shunt patency by radionuclide technique: a review experience cases.

Chiewvit S, Nuntaaree S, Kanchaanapiboon P, Chiewvit P - World J Nucl Med (2014)

Bottom Line: The radionuclide CSF shuntography is a useful tool in the management of patients presenting with shunt-related problems not elucidated by conventional radiological examination.The normal finding, abnormal finding of completed obstruction and partial obstruction is present by our cases experience.The radiopharmaceutical (Tc-99m diethylenetriaminepentaacetic acid) was injected via the reservoir for VP shunt and via lumbar puncture needle in subarachnoid space for LP shunt, then serial image in the head and abdominal area.

View Article: PubMed Central - PubMed

Affiliation: Department of Radiology, Division of Nuclear Medicine, Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand.

ABSTRACT
Hydrocephalus-related symptoms that worsen after shunt placement may indicate a malfunctioning or obstructed shunt. The assessment of shunt patency and site of obstruction is important for planning of treatment. The radionuclide cerebrospinal fluid (CSF) shunt study provides a simple, effective, and low-radiation-dose method of assessing CSF shunt patency. The radionuclide CSF shuntography is a useful tool in the management of patients presenting with shunt-related problems not elucidated by conventional radiological examination. This article described the imaging technique of ventriculoperitoneal (VP) shunt and lumbar puncture (LP) shunt. The normal finding, abnormal finding of completed obstruction and partial obstruction is present by our cases experience. The radiopharmaceutical (Tc-99m diethylenetriaminepentaacetic acid) was injected via the reservoir for VP shunt and via lumbar puncture needle in subarachnoid space for LP shunt, then serial image in the head and abdominal area. The normal function of VP and LP shunt usually rapid spillage of the radioactivity in the abdominal cavity diffusely. The patent proximal tube VP shunt demonstrates ventricular reflux. The early image of patent LP shunt reveals no activity in the ventricular system contrast to distal LP shunt reveals early reflux of activity in the ventricular system. The completed distal VP and LP shunt obstruction show absence of tracer in the peritoneal area or markedly delayed appearance of abdominal activity. The partial distal VP and LP shunt obstruction recognized by slow transit or accumulation of tracer at the distal end or focal tracer in the peritoneal cavity near the tip of distal shunt. The images of the normal and abnormal CSF shunt as describe before are present in the full paper. Radionuclide CSF shuntography is a reliable and simple procedure for assessment shunt patency.

No MeSH data available.


Related in: MedlinePlus

A 22-year-old woman post VP shunt and clinical suspicious VP shunt malfunction. The scan in the early image show the activity prompt excreted activity in the distal tube (dark blue arrow) and abdominal cavity (red arrow), indicated good function of VP shunt. The delayed images at 3 and 6 hour reveal decreased of the activity in the reservoir (green arrow), distal tube and abdominal cavity. There are faint activity in bilateral kidneys and significant urinary bladder activitydue to reabsorb of99mTc DTPA.
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Figure 7: A 22-year-old woman post VP shunt and clinical suspicious VP shunt malfunction. The scan in the early image show the activity prompt excreted activity in the distal tube (dark blue arrow) and abdominal cavity (red arrow), indicated good function of VP shunt. The delayed images at 3 and 6 hour reveal decreased of the activity in the reservoir (green arrow), distal tube and abdominal cavity. There are faint activity in bilateral kidneys and significant urinary bladder activitydue to reabsorb of99mTc DTPA.

Mentions: Ventricular reflux was demonstrated. The entire shunt system was visualized without any blockage, the isotope passed uniformly into the abdominal cavity and no focal activity was observed around the distal end of the peritoneal catheter. No activity or little activity in the distal tube and spinal canal were observed delayed image. There is excreted activity in the kidney and urinary bladder in the 1 and 3-h images [Figure 5]. The radionuclide CSF shuntography in Figures 6 and 7 patients were normal VP shunt clear of activity, but slower than Figure 5 patient.


Assessment lumboperitoneal or ventriculoperitoneal shunt patency by radionuclide technique: a review experience cases.

Chiewvit S, Nuntaaree S, Kanchaanapiboon P, Chiewvit P - World J Nucl Med (2014)

A 22-year-old woman post VP shunt and clinical suspicious VP shunt malfunction. The scan in the early image show the activity prompt excreted activity in the distal tube (dark blue arrow) and abdominal cavity (red arrow), indicated good function of VP shunt. The delayed images at 3 and 6 hour reveal decreased of the activity in the reservoir (green arrow), distal tube and abdominal cavity. There are faint activity in bilateral kidneys and significant urinary bladder activitydue to reabsorb of99mTc DTPA.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4150163&req=5

Figure 7: A 22-year-old woman post VP shunt and clinical suspicious VP shunt malfunction. The scan in the early image show the activity prompt excreted activity in the distal tube (dark blue arrow) and abdominal cavity (red arrow), indicated good function of VP shunt. The delayed images at 3 and 6 hour reveal decreased of the activity in the reservoir (green arrow), distal tube and abdominal cavity. There are faint activity in bilateral kidneys and significant urinary bladder activitydue to reabsorb of99mTc DTPA.
Mentions: Ventricular reflux was demonstrated. The entire shunt system was visualized without any blockage, the isotope passed uniformly into the abdominal cavity and no focal activity was observed around the distal end of the peritoneal catheter. No activity or little activity in the distal tube and spinal canal were observed delayed image. There is excreted activity in the kidney and urinary bladder in the 1 and 3-h images [Figure 5]. The radionuclide CSF shuntography in Figures 6 and 7 patients were normal VP shunt clear of activity, but slower than Figure 5 patient.

Bottom Line: The radionuclide CSF shuntography is a useful tool in the management of patients presenting with shunt-related problems not elucidated by conventional radiological examination.The normal finding, abnormal finding of completed obstruction and partial obstruction is present by our cases experience.The radiopharmaceutical (Tc-99m diethylenetriaminepentaacetic acid) was injected via the reservoir for VP shunt and via lumbar puncture needle in subarachnoid space for LP shunt, then serial image in the head and abdominal area.

View Article: PubMed Central - PubMed

Affiliation: Department of Radiology, Division of Nuclear Medicine, Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand.

ABSTRACT
Hydrocephalus-related symptoms that worsen after shunt placement may indicate a malfunctioning or obstructed shunt. The assessment of shunt patency and site of obstruction is important for planning of treatment. The radionuclide cerebrospinal fluid (CSF) shunt study provides a simple, effective, and low-radiation-dose method of assessing CSF shunt patency. The radionuclide CSF shuntography is a useful tool in the management of patients presenting with shunt-related problems not elucidated by conventional radiological examination. This article described the imaging technique of ventriculoperitoneal (VP) shunt and lumbar puncture (LP) shunt. The normal finding, abnormal finding of completed obstruction and partial obstruction is present by our cases experience. The radiopharmaceutical (Tc-99m diethylenetriaminepentaacetic acid) was injected via the reservoir for VP shunt and via lumbar puncture needle in subarachnoid space for LP shunt, then serial image in the head and abdominal area. The normal function of VP and LP shunt usually rapid spillage of the radioactivity in the abdominal cavity diffusely. The patent proximal tube VP shunt demonstrates ventricular reflux. The early image of patent LP shunt reveals no activity in the ventricular system contrast to distal LP shunt reveals early reflux of activity in the ventricular system. The completed distal VP and LP shunt obstruction show absence of tracer in the peritoneal area or markedly delayed appearance of abdominal activity. The partial distal VP and LP shunt obstruction recognized by slow transit or accumulation of tracer at the distal end or focal tracer in the peritoneal cavity near the tip of distal shunt. The images of the normal and abnormal CSF shunt as describe before are present in the full paper. Radionuclide CSF shuntography is a reliable and simple procedure for assessment shunt patency.

No MeSH data available.


Related in: MedlinePlus