Molecular Diagnostics and Therapy provides advanced radiology and diagnostic imaging services; you can get your X-ray nephrogram from an NABL & NABH-accredited diagnostic centre. A contrast study of the kidneys and the movement of the contrast through the urinary tract is called an X-ray Nephrogram. It may be helpful in studying the kidney structure, the elimination of the contrast, and certain specific abnormalities of the urinary tract, depending on which technique is ordered.
About X-Ray Nephrogram
A special X-ray test is done after the material is injected into the blood to view the kidneys, called X-ray nephrogram. Contrast is added to improve the definition of the renal structures, and in some examination protocols, to provide clues to renal function based on its uptake and excretion. The image of the kidneys in a specific test of the urinary tract using a special dye may be called a nephrogram. There are different procedures for different doctors' requests and may also be connected to a particular urinary tract test, for instance, an intravenous urography.
What is an X-Ray Nephrogram?
X-ray nephrogram: X-ray of the kidneys following the injection of a contrast material. Intravenous contrast is administered into a vein and circulates through the bloodstream, allowing the kidneys to be visualised as the contrast reaches them. Images are taken at suitable time periods, allowing the renal enhancement to be viewed and, as per protocol, the movement of the contrast material down to the collecting systems and ureters. The exam may help to demonstrate some selected structural abnormalities, differences in uptake of the contrast dye, delayed excretion, or other changes that should be further evaluated. The results will depend on the imaging modality and the clinical question.
Common Reasons for X-Ray Nephrogram
Kidney Abnormalities: Evaluates specific abnormalities in the kidneys.
Suspected Urinary Tract Obstruction: May include delayed contrast passage information in the protocol (as listed above).
Abnormal Position or Shape of Kidneys: Helps to see the kidneys' position and outline.
Suspected Collecting System Abnormalities: May help evaluate specific Collecting System abnormalities.
Assessment of Contrast Excretion: Can give information about the timing and pattern of the contrast being excreted during exam.
Further Evaluation of Previous Findings: May be warranted if previous imaging has detected an abnormality of the kidney that needs further evaluation.
Post-Treatment Assessment: Selected patients may undergo imaging studies to assess an existing UT problem after treatment.
Diagnostic Investigation: May be ordered by the treating physician if additional information is needed about the kidneys and/or urinary tract.
Conditions Evaluated
Renal Structural Abnormalities
This examination can be helpful to demonstrate the size, location, shape, and contrast of the kidneys. Depending on the technique, some structural abnormalities can be detected.
Contrast Uptake and Excretion
Contrast imaging might reveal the kidneys' uptake and excretion of the contrast agent. Any abnormal or delayed contrast will need further evaluation, but should be considered alongside clinical history and other tests.
Urinary Tract Obstruction
With the use of appropriate delayed imaging, the study can aid in the detection of urinary tract abnormalities. Further tests may be necessary to confirm the cause and degree of an obstruction.
Renal Collecting System Abnormalities
The renal collecting system is a conduit that transports urine from the kidneys to the ureters. Examination can be performed by contrast imaging if the examination protocol requires it, to help determine the outline of it, and to identify selected structural changes.
Congenital Renal Variations
The examination might give clues to some variations in the position of the kidneys or their shape. Other imaging may be needed to aid in detailed definition of an abnormality.
Follow-Up of Known Renal Conditions
However, in select cases, a nephrogram may be ordered as part of the workup of an already diagnosed urologic problem. The kinds of tests depend on the disease being monitored and the information that the doctor is trying to find out in the patient who is being treated.
Why Choose Molecular Diagnostics and Therapy?
An NABL & NABH Accredited Diagnostic Centre, Molecular Diagnostics and Therapy is an advanced Radiology, Nuclear Medicine and Pathology Centre. Our imaging emphasis is on proper examination procedures, good diagnostic imaging, patient care, and providing accurate reporting. The team gives their input in the requested investigation and the examination is conducted by the team as needed by the referring physician.
Book Your X-Ray Nephrogram
If the doctor has recommended an X-Ray Nephrogram, contact Molecular Diagnostics and Therapy to schedule an appointment and to check their availability for an examination. Take your prescription and imaging history (if available). The examination technique and whether intravenous contrast is required depend on the test prescribed. Inform the centre about relevant medical conditions, allergies, current medicines and previous imaging, and follow the clinical team's instructions.
Test information: 4–6 hours of fasting is required.
Reporting: Within 24 hours*
Fasting for 4–6 hours is generally required. Follow the specific instructions provided by the diagnostic centre.
Inform the radiology team if you are pregnant or suspect you may be pregnant.
Tell the team if you have kidney disease, diabetes, thyroid disease, or any other relevant medical condition.
Inform the staff about any previous reaction to X-ray contrast agents, known allergies, or current medications.
Tell the team if you are taking medicines that may require special instructions before contrast imaging. Do not stop prescribed medication unless your doctor advises you to do so.
If intravenous contrast is planned, kidney function blood tests may be required before the examination, depending on your medical history and the centre's protocol.
Bring your doctor's prescription, previous imaging reports, and recent kidney function test results, if available.
Follow the team's instructions regarding food, fluids, and medication before the examination.
जाँच से पहले सामान्यतः 4–6 घंटे तक खाली पेट रहना आवश्यक होता है। जाँच केंद्र द्वारा दिए गए निर्देशों का पालन करें।
यदि आप गर्भवती हैं या गर्भावस्था की संभावना है, तो रेडियोलॉजी टीम को बताएं।
यदि आपको गुर्दे की बीमारी, मधुमेह, थायरॉइड की बीमारी या कोई अन्य संबंधित स्वास्थ्य समस्या है, तो इसकी जानकारी दें।
एक्स-रे में इस्तेमाल होने वाले कॉन्ट्रास्ट पदार्थ से पहले कोई प्रतिक्रिया हुई हो, किसी चीज़ से एलर्जी हो या आप नियमित दवाएँ लेते हों, तो स्टाफ को बताएं।
यदि आप ऐसी दवाएँ लेते हैं जिनके लिए कॉन्ट्रास्ट जाँच से पहले विशेष निर्देश आवश्यक हो सकते हैं, तो टीम को सूचित करें। डॉक्टर की सलाह के बिना दवाएँ बंद न करें।
यदि नस के माध्यम से कॉन्ट्रास्ट दिया जाना है, तो आपकी स्वास्थ्य स्थिति के अनुसार गुर्दों की कार्यक्षमता की रक्त जाँच आवश्यक हो सकती है।
डॉक्टर की पर्ची, पुरानी इमेजिंग रिपोर्ट और गुर्दों की कार्यक्षमता की हाल की जाँच रिपोर्ट उपलब्ध हों, तो साथ लाएं।
जाँच से पहले भोजन, पानी और दवाओं के संबंध में रेडियोलॉजी टीम के निर्देशों का पालन करें।
The patient is positioned appropriately for imaging of the kidneys and the relevant urinary tract structures.
If the prescribed examination requires intravenous contrast, a suitable contrast agent is administered through a vein after the necessary safety checks.
X-ray images are obtained at appropriate intervals as the contrast reaches the kidneys. Additional images may be taken to assess contrast passage into the collecting systems and ureters, depending on the protocol.
The radiologist evaluates the images for kidney outline, contrast uptake, and any visible structural abnormalities or delayed contrast passage.
The examination technique and the structures assessed depend on the specific nephrogram protocol requested by the referring doctor.
After the examination, the patient receives instructions regarding fluid intake and any other precautions, based on their medical condition and the contrast used.
* For details, please see service-related policies
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It is not intended to replace professional medical advice, diagnosis, or treatment.
Always consult a qualified healthcare professional for advice regarding your individual health condition or treatment.