Radiation Protection Lead Glass Resistant To Most Chemicals with 55-65% Lead Oxide Content and 4mmPb Lead Equivalent for X Ray Shielding

Isotope

⁹⁹ᵐTc (140 keV, 6 hour half‑life) – accounts for >80% of SPECT studies.

Shielding requirement

2.5–3.0 mm Pb equivalent.

Jovvi solution

Monolithic lead glass, 14–18 mm physical thickness. Light transmission 80–84%.

Special consideration: SPECT cameras rotate around the patient. The control booth window must provide a wide field of view. Jovvi offers panels up to 1,500×1,200 mm – large enough to see the entire gantry.

Installation note: Wall shielding must match glass Pb eq. If walls are 2.5 mm Pb and glass is 3.0 mm Pb, the glass is not the weak point – but the wall‑to‑glass junction must be sealed with lead tape.

Isotope

¹⁸F‑FDG (511 keV annihilation photons, 110 minute half‑life).

Shielding requirement

4.0–5.0 mm Pb equivalent minimum, but monolithic glass at this thickness is heavy and still transmits ~50%.

Jovvi solution

Composite window – 2.5 mm Pb glass + 10 mm lead acrylic + 2.5 mm Pb glass. Total thickness ~35 mm. 511 keV transmission <15%. Weight 70 kg/m² (vs. 110 kg/m² for 5 mm monolithic).

Special consideration: PET‑CT technologists view fusion images (PET overlaid on CT) through the glass. Optical distortion must be minimal. Jovvi composite windows are optically bonded with UV‑stable adhesive – no haze or double images.

Isotopes handled

⁹⁹ᵐTc, ¹³¹I, ¹⁸F‑FDG, ⁶⁸Ga, ¹⁷⁷Lu (varies).

Shielding requirement

2.5 mm Pb equivalent – sufficient because handling time is short (minutes per dose) and syringe shields provide additional protection.

Jovvi solution

Small panel (400×300 mm or 500×400 mm), 2.5 mm Pb, anti‑reflection coating on both sides to eliminate glare from laminar flow hood lights.

Special consideration: Pharmacists need to read 0.01 mL graduations on 1 mL syringes. Jovvi guarantees 0.5 mm minimum feature resolution at 30 cm viewing distance.

Isotopes

¹³¹I (364 keV, 8 day half‑life) – typical administered activity 100–800 mCi. Also ¹⁷⁷Lu (208 keV), ⁹⁰Y (pure beta – no gamma, but bremsstrahlung).

Shielding requirement

3.5–4.0 mm Pb equivalent.

Jovvi solution

Monolithic lead glass, 20–24 mm physical thickness. Nurse station window sized 800×600 mm.

Special consideration: Patients may stay in isolation for several days. Nurses observe for distress, bleeding, or falls. Glass must be distortion‑free to allow accurate assessment of patient color and consciousness. Jovvi provides optical flatness certificate with every therapy grade panel.