It’s important to get the full picture

 

For many patients, Nuclear medicine is the best early warning system for a long list of conditions that includes: certain kinds of thyroid disease; tumours; and bone changes. Diagnosing disease earlier can make treatment more effective.

NZMI uses a Siemens multislice SPECT-CT system. The ‘SPECT ‘imaging allows us to view nuclear medicine scans in 3-D and on multiple different planes, which increases sensitivity and overall accuracy. The multislice CT extends the diagnostic information even further by also allowing very accurate anatomical localisation.

By pairing quality imaging equipment with our leading Nuclear Medicine specialists, NZMI imaging provides you with quality scans and interpretations.

 

Areas where nuclear imaging scans can help

Click the links below if you know your specific area of interest.

Bone - SPECT and Planar

Bone scanning is a well established technique, and is one of the most reliable, sensitive and valuable procedures in scintigraphy. These scans can detect abnormalities weeks to months before routine skeletal x-rays. Single-photon emission computed tomography (SPECT) is an imaging modality that combines conventional scintigraphic and computed tomographic (CT) methods.

 

Indications

Sports Injuries - Stress fracture/shin splints


Evaluation of Bone Pain


Detection, evaluation and staging of skeletal metastases and/or primary bone disease


Early diagnosis of osteomyelitis (osteomyelitis v cellulitis)


Localisation and follow up of Paget's disease


Evaluation of hip and knee prostheses

Detection of AVN


Confirmation and evaluation of non-accidental injury in children


Bones in hands and feet (scaphoid)

Myocardial Perfusion Imaging Rest/Stress test

Myocardial perfusion imaging is recognised to be the most accurate non-invasive means of detecting coronary artery disease and assessing the severity and extent of perfusion defects in patients with coronary stenosis. A scan of this type provides both anatomical and physiological information via a cost effective, low radiation risk and relatively painless procedure. Modern software applications means analysis of the 'ECG Gated SPECT' acquired data can produce images that show ventricular endocardial and epicardial surfaces and calculation of LV Ejection fraction, EDV and ESV. Polar maps can also be displayed indicating perfusion, wall thickening, wall motion and regional ejection fraction in an easy to interpret fashion.


Gated Blood Pool Study

The resting gated blood pool study evaluates right and left regional ventricular wall motion and ejection fraction at rest.

 

Indications

Evaluate ventricular wall motion


Measure ventricular ejection fractions


Monitor cardiotoxicity of Chemotherapy drugs


Differentiate pulmonary and cardiac causes of dyspnoea

 
 

Radionuclide lung imaging

Radionuclide lung imaging demonstrates pulmonary perfusion as well as the assessment of ventilation.

These studies can be both qualitative and quantitative and can distinguish between diffuse and regional pulmonary disease. The ventilation / perfusion ( V/Q) scan has the ability to display both regional airway and vascular integrity forming the basis for the non-invasive diagnosis of pulmonary emboli.

 

Indications

Diagnosis of pulmonary embolism

Preoperative assessment of high risk patients before planned lung resection, dead-space lung volume reduction in severe COPD, and lung transplantation

 

Renal Scan (DMSA)

Uptake in functional renal parenchyma.

 

Indications

 Assess relative function of each kidney


Recent UTI (pyelonephritis)

Check for renal scarring


Evaluation of congenital abnormalities



Renogram (DTPA or MAG3)

Provides information relating to renal vascularity, renal function and excretion.

 

Indications

Renogram - Renal obstruction


Differential function


Assessment of transplant


Diuretic Renogram - To differentiate a dilated from an obstructed renal collecting system

Captopril Renogram - diagnosis of renal artery stenosis (RAS)

 

A thyroid pertechnetate scan is used to image the thyroid and evaluate its function.

 

Indications

To differentiate among the causes of thyrotoxicosis, that is Graves' disease from subacute, silent, postpartum, or factitious hyperthyroidism


Evaluation of congenital hypothyroidism

To relate the general structure of the gland to function- differentiate Graves' disease from toxic nodular goiter


To locate ectopic tissue

To determine function in specific area - query if palpable nodule is functional


Hepatobiliary (IDA Scan)

Demonstrates hepatic perfusion, hepatocyte clearance, hepatic parenchymal transit, biliary excretion and gall bladder function.

 

Indications

Diagnosis of acute cholecystitis


Sphincter of Oddi dysfunction

Evaluation of extrahepatic biliary tract obstruction


Detection of bile leaks

Evaluation of post-surgical biliary tract


Diagnosis of biliary atresia and other congenital anomalies of the biliary tract


Evaluation of liver transplants


Unexplained pain. RUQ or epigastric



Hepatic Haemangioma

A radiolabelled red blood cell study depicts the amount of perfusion and vascular space within hepatic lesions. Haemangioma are distinguished by their relatively decreased perfusion and increased vascular volume compared to hepatic parenchyma.


Liver/Spleen Colloid Study

Demonstration of phagocyte system.

 

Indications

Assessment of chronic liver disease

Assessment of liver or spleen size and configuration

Diagnosis of focal nodular hyperplasia