Acquisition
- Use gammacamera with paralell high resolution or all purpose collimator for imaging.
- Obtain a dynamic study for 30 min every 1-5 min in anterior view.
- Posterior and anterior obliques static projections help localize the uptake site.
- Likewise, delay spot views and spect (if feasible) could help in doubtful cases.
Vali R. et al. has demonstrated that the repetition of the scan in negative or equivocal cases, may increase detectability. Thus, according to their experience, 7 out of 12 (58%) non diagnostic studies were positive on a second examination.
References:
1 ALLAN O. Santos, Elba C. S. C. Etchebehere, P. Garcia Alonso y EDWALDO E. Camargo. HEMORRAGIAS DIGESTIVAS , p: 249-257 in: Medicina Nuclear Aplicaciones Clínicas. Eds: I. Carrio - P. González. Editorial Masson, Barcelona España, 2003.
2 Patrick V. Ford et al. Procedure Guideline for Gastrointestinal Bleeding and Meckel’s Diverticulum Scintigraphy 1.0 SOCIETY OF NUCLEAR MEDICINE PROCEDURE GUIDELINES MANUAL 2001-2002: 41-48.
3 Reza Vali & Alan Daneman & Susan McQuattie & Amer Shammas. The value of repeat scintigraphy in patients with a high clinical suspicion for Meckel diverticulum after a negative or equivocal first Meckel scan. Pediatr Radiol DOI 10.1007/s00247-015-3340-x.