Dacryoscintigraphy
Dacryoscintigraphy | |
---|---|
Synonyms | microscintigraphy nuclear dacryocystogram nuclear lacrimal scan lacrimal scintillography |
ICD-10-PCS | C8191ZZ |
LOINC | 39670-5 |
Dacryoscintigraphy (DSG), also known as lacrimal scintigraphy, is a
lacrimal duct, nasal cavity or nasolacrimal duct
.
Procedure
The typical procedure involves use of
millilitre (ml). Patients place their head in a support and chin rest and a single drop of 0.01 ml is delivered to each eye. Imaging with a gamma camera commences immediately, with a number of images acquired over 15 minutes.[1][2]
Clinical applications
Typical indications include epiphora and dacryocystitis.[3]
DSG allows
Advantages of DSG over
dacrocystography include better functional information and a lack of injection.[9] DSG does not provide precise localisation and may not be useful in cases of complete obstruction.[10]
History
The technique was first introduced in 1972.[11]
References
- ^ "Lacrimal Scintigraphy v2" (PDF). BNMS. June 2018. Retrieved 25 August 2021.
- S2CID 230665389.
- ISBN 9788132218265.
- PMID 25191107.
- PMID 17131012.
- PMID 10441276.
- S2CID 20761303.
- S2CID 27031370.
- ISBN 9780323400442.
- S2CID 24169076.
- PMID 4634791.